Home / 641,620,989-885,414,052.35-363,156,533.82

Finding the Fourth Proportional to 641,620,989, 885,414,052.35 and 363,156,533.82

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Solution

The fourth proportional to 641,620,989, 885,414,052.35 and 363,156,533.82 is: 501,143,048.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,620,989 : 885,414,052.35 = 363,156,533.82 : x
  2. Step 2: Convert to fraction form
    641,620,989/885,414,052.35 = 363,156,533.82/x
  3. Step 3: Cross multiply
    641,620,989x = 885,414,052.35 × 363,156,533.82
  4. Step 4: Simplify right side
    641,620,989x = 321,543,898,246,946,048
  5. Step 5: Solve for x
    x = 321,543,898,246,946,048/641,620,989
  6. Step 6: Final answer
    x = 501,143,048.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.